You can add this modules.

Demo Links
All extension

Adds Google Translate to all your pages.
Easy configuring in Admin/ Settings
Multi-Store Support
Languages: Dutch & English
VQMod - No core files are overwritten
OCMod - No core files are overwritten
Free support

Google Translate
Easy Installation Not file Overright and change file
Login to your admin site.
Open: System >> Setting. Store Edit. Tab 'Option'.
'Google Translate' setting is located after 'Reviews', before 'Vouchers'.
Select 'Yes' at 'Google Translate' if you want to activate this system.